On Sun, 4 Dec 2016 20:55:27 -0800, Guenter Roeck wrote:
> Module test reports overflows when writing into temperature and voltage
> limit attributes
>
> temp1_min: Suspected overflow: [127000 vs. 0]
> temp1_max: Suspected overflow: [127000 vs. 0]
> temp1_offset: Suspected overflow: [127000 vs. 0]
> temp2_min: Suspected overflow: [127000 vs. 0]
> temp2_max: Suspected overflow: [127000 vs. 0]
> temp2_offset: Suspected overflow: [127000 vs. 0]
> temp3_min: Suspected overflow: [127000 vs. 0]
> temp3_max: Suspected overflow: [127000 vs. 0]
> temp3_offset: Suspected overflow: [127000 vs. 0]
> in0_min: Suspected overflow: [3320 vs. 0]
> in0_max: Suspected overflow: [3320 vs. 0]
> in4_min: Suspected overflow: [15938 vs. 0]
> in4_max: Suspected overflow: [15938 vs. 0]
> in6_min: Suspected overflow: [1992 vs. 0]
> in6_max: Suspected overflow: [1992 vs. 0]
> in7_min: Suspected overflow: [2391 vs. 0]
> in7_max: Suspected overflow: [2391 vs. 0]
>
> The problem is caused by conversions from unsigned long to long and
> from long to int.
>
> Signed-off-by: Guenter Roeck <[email protected]>
> ---
> drivers/hwmon/smsc47m192.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/hwmon/smsc47m192.c b/drivers/hwmon/smsc47m192.c
> index 6ac7cda72d4c..202e167d6a59 100644
> --- a/drivers/hwmon/smsc47m192.c
> +++ b/drivers/hwmon/smsc47m192.c
> @@ -77,6 +77,7 @@ static inline unsigned int IN_FROM_REG(u8 reg, int n)
>
> static inline u8 IN_TO_REG(unsigned long val, int n)
> {
> + val = clamp_val(val, 0, 65535);
> return clamp_val(SCALE(val, 192, nom_mv[n]), 0, 255);
> }
Same as for adm9240, I would suggest to remove the second clamp_val():
static inline u8 IN_TO_REG(unsigned long val, int n)
{
val = clamp_val(val, 0, nom_mv[n] * 255 / 192);
return SCALE(val, 192, nom_mv[n]);
}
>
> @@ -84,7 +85,7 @@ static inline u8 IN_TO_REG(unsigned long val, int n)
> * TEMP: 0.001 degC units (-128C to +127C)
> * REG: 1C/bit, two's complement
> */
> -static inline s8 TEMP_TO_REG(int val)
> +static inline s8 TEMP_TO_REG(long val)
> {
> return SCALE(clamp_val(val, -128000, 127000), 1, 1000);
> }
Other than this:
Reviewed-by: Jean Delvare <[email protected]>
--
Jean Delvare
SUSE L3 Support
--
To unsubscribe from this list: send the line "unsubscribe linux-hwmon" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
